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source [file dirname [info script]]/testing.tcl
# Check "loop" and its use of continue and break.
needs cmd loop
catch {unset a i}
test loop-1.1 {loop tests} {
set a {}
loop i 1 6 {
set a [concat $a $i]
}
set a
} {1 2 3 4 5}
test loop-1.2 {loop tests} {
set a {}
loop i 1 6 {
if $i==4 continue
set a [concat $a $i]
}
set a
} {1 2 3 5}
test loop-1.3 {loop tests} {
set a {}
loop i 1 6 {
if $i==4 break
set a [concat $a $i]
}
set a
} {1 2 3}
test loop-1.5 {loop errors} {
catch {loop 1 2 3} msg
} {1}
test loop-1.6 {loop errors} {
catch {loop 1 2 3 4 5} msg
} {1}
test loop-1.7 {loop tests} {
set a {xyz}
loop i 1 6 {
}
set a
} xyz
test loop-1.8 {error in loop} {
set rc [catch {
set a {}
loop i 1 6 {
lappend a $i
if {$i == 3} {
error "stop"
}
}
}]
list $a $rc
} {{1 2 3} 1}
test loop-1.9 {loop incr} {
set a {}
loop i 0 6 2 {
lappend a $i
}
set a
} {0 2 4}
test loop-1.10 {no exec infinite loop} {
set a {}
loop i 0 6 -1 {
lappend a $i
break
}
set a
} {}
test loop-2.1 {loop shimmering tests} {
loop i 1 6 {
}
set i
} 6
test loop-2.2 {loop shimmering tests} {
# Setting the variable inside the loop doesn't
# affect the loop or the final variable value
loop i 1 6 {
set i blah
}
set i
} 6
test loop-2.3 {loop shimmering tests} {
set a {}
loop i 1 6 {
lappend a $i
set i blah
lappend a $i
}
set a
} {1 blah 2 blah 3 blah 4 blah 5 blah}
test loop-2.4 {loop shimmering tests} {
set i xyz
loop i 1 6 {
}
set i
} 6
test loop-2.5 {loop shimmering tests} {
# Ensure that the string rep of $i is updated
set i {1 3}
loop i(1) 1 6 {
}
set i
} {1 6}
test loop-2.6 {modify loop var} {
unset -nocomplain i
catch {
loop i(1) 1 6 {
# this makes it impossible to set the loop var
set i blah
}
}
} 1
test loop-2.7 {unset loop var} {
unset -nocomplain i
loop i 1 6 {
# var will simply get recreated on each loop
unset i
}
set i
} 6
test loop-2.8 {modify loop var} {
unset -nocomplain i
set a {}
loop i 1 6 {
lappend a $i
incr i
}
set a
} {1 2 3 4 5}
testreport
break
testreport
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